1. Shizuoka Chubu Livestock Disease Diagnostic Center, Shizuoka Prefecture
2. Pathology and Pathophysiology Research Division, National Institute of Animal Health, National Agriculture and Food Research Organization
3. Division of Pathology, Veterinary Research Institute
4. Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
5. Fukushima Prefecture Kenchu Livestock Hygiene Service Center
6. Narita Branch 1st Animal Inspection Division, Animal Quarantine Service